US2805181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic laminate
Assignee: Union Carbide Corp
•
Filing: 1953-09-03
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Granted: 1957-09-03
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Expires: 1973-09-03
Abstract
No abstract record available.
Inventors
- 👤 Groff Frazier
- 👤 Carlo F Martino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:46
CPC Classifications
B; B32; B32B; B32B27/00; B29; B29C; B29C70/00; B29C70/003; B29C70/0035; B29K; B29K2309/00; B29K2309/08; Y; Y10; Y10S; Y10S297/00; Y10S297/02; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31645; Y10T428/31649; Y10T428/31855; Y10T428/31909; Y10T428/31928; Y10T442/00; Y10T442/60; Y10T442/674; Y10T442/679
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A LAMINATE OF UNIFORM DENSITY HAVING HIGH FLEXURAL AND IMPACT STRENGTHS AND A HIGH HEAT DISTORTION TEMPERATURE COMPRISING ALTERNATE LAYERS OF AT LEAST ONE HARD AND SOLID SHEET OF GLASS FIBERS IMPREGNATED WITH BETWEEN 50 AND 85 PERCENT BY WEIGHT OF AT LEAST ONE POLYMER SELECTED FROM THE GROUP CONSISTING OF EMULSION-POLYMERIZED STYRENE HOMOPOLYMER AND EMULSION-POLYMERIZED STYRENEACRYLONITRILE COPOLYMER, SAID HARD AND SOLID SHEET BEING LAMINATED TO AT LEAST TWO SHEETS OF A SYNTHETIC RUBBERMODIFIED STYRENE POLYMER COMPRISING AN EMULSION-POLYMERZED STYRENE POLYMER MODIFIED BY THE ADDITION OF A SYNTHETIC RUBBER SELECTED FROM THE GROUP CONSISTING OF RUBBERY COPOLYMERS OF STYRENE AND BUTADIENE AND RUBBERY COPOLYMERS OF BUTADIENE AND ACRYLONITRILE, THE TOTAL PERCENTAGE OF POLYMERIZED STYRENE IN SAID RUBBER-MODIFIED STYRENE POLYMER SHEETS BEING BETWEEN 70 AND 95 PERCENT BY WEIGHT.
Claim 2
Dependent Claim
128 words
A LAMINATE OF UNIFORM DENSITY HAVING HIGH FLEXURAL AND IMPACT STRENGTHS AND A HIGH HEAT DISTORTION TEMPERATURE COMPRISING ALTERNATE LAYERS OF AT LEAST ONE HARD AND SOLID SHEET OF GLASS FIBERS IMPREGNATED WITH BETWEEN 50 AND 85 PERCENT BY WEIGHT OF AT LEAST ONE POLYMER SELECTED FROM THE GROUP CONSISTING OF EMULSION-POLYMERIZED STYRENE HOMOPOLYMER AND EMULSION-POLYMERIZED STYRENEACRYLONITRILE COPOLYMER, SAID HARD AND SOLID SHEET BEING LAMINATED TO AT LEAST TWO SHEETS OF A SYNTHETIC RUBBERMODIFIED STYRENE POLYMER COMPRISING AN EMULSION-POLYMERZED STYRENE POLYMER MODIFIED BY THE ADDITION OF A SYNTHETIC RUBBER SELECTED FROM THE GROUP CONSISTING OF RUBBERY COPOLYMERS OF STYRENE AND BUTADIENE AND RUBBERY COPOLYMERS OF BUTADIENE AND ACRYLONITRILE, THE TOTAL PERCENTAGE OF POLYMERIZED STYRENE IN SAID RUBBER-MODIFIED STYRENE POLYMER SHEETS BEING BETWEEN 70 AND 95 PERCENT BY WEIGHT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |